Table 1.
Incidence rate of eating disorders per 10,000 person-years by age (divided into 5-year epochs), sex and type of eating disorder.
| Females | Males | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|
|
| |||||||||
| Age (years) | Cases (N) | Person- Years | Incidence (95% CI) | Cases (N) | Person-Years | Incidence (95% CI) | Cases (N) | Person-Years | Incidence (95% CI) |
| Broad Anorexia Nervosa
| |||||||||
| 6-10 | 22 | 1679757.3 | 0.13 (0.09, 0.20) | 4 | 1770800.3 | 0.02 (0.01, 0.06) | 26 | 3450557.6 | 0.08 (0.05, 0.11) |
| 11-15 | 929 | 1533786.0 | 6.05 (5.68, 6.46) | 108 | 1619727.6 | 0.67 (0.55, 0.81) | 1037 | 3153513.6 | 3.29 (3.10, 3.50) |
| 16-20 | 1014 | 870339.6 | 11.65 (10.96, 12.39) | 71 | 921606.8 | 0.77 (0.61, 0.97) | 1085 | 1791946.5 | 6.05 (5.71, 6.43) |
| 21-24 | 171 | 206114.3 | 8.30 (7.14, 9.64) | 5 | 218857.9 | 0.23 (0.10, 0.55) | 176 | 424972.3 | 4.14 (3.57, 4.80) |
|
| |||||||||
| Narrow Anorexia Nervosa
| |||||||||
| 6-10 | 11 | 1679770.6 | 0.07 (0.04, 0.12) | <4 | 1770801.9 | 0.02 (0.01, 0.05) | 14 | 3450572.5 | 0.04 (0.02, 0.07) |
| 11-15 | 690 | 1534139.2 | 4.50 (4.17, 4.85) | 73 | 1619791.7 | 0.45 (0.36, 0.57) | 763 | 3153930.9 | 2.42 (2.25,2.60) |
| 16-20 | 683 | 871592.6 | 7.84 (7.27, 8.45) | 42 | 921764.8 | 0.46 (0.34, 0.62) | 725 | 1793357.4 | 4.04 (3.76, 4.35) |
| 21-24 | 92 | 206622.7 | 4.45 (3.63, 5..46) | <4 | 218901.2 | 0.14 (0.04, 0.42) | 95 | 425523.9 | 2.23 (1.83, 2.73) |
|
| |||||||||
| Bulimia Nervosa
| |||||||||
| 6-10 | 0 | 1679781.2 | 0.00 (·, ·) | 0 | 1770804.2 | 0.00 (·, ·) | 0 | 3450585.4 | 0.00 (·, ·) |
| 11-15 | 69 | 1535112.6 | .45 (0.36,0.57) | 0 | 1619923.6 | 0.00 (·, ·) | 69 | 3155036.3 | 0.22 (0.17,0.28) |
| 16-20 | 489 | 873966.3 | 5.60 (5.12, 6.11) | 18 | 922005.0 | 0.19 (0.12, 0.31) | 507 | 1795971.3 | 2.82 (2.59, 3.08) |
| 21-24 | 181 | 206973.8 | 8.75 (7.56, 10.11) | <4 | 218966.1 | 0.09 (0.02, 0.37) | 183 | 425939.9 | 4.30 (3.72, 4.97) |
|
| |||||||||
| Eating Disorder Not Otherwise Specified
| |||||||||
| 6-10 | 21 | 1679752.6 | 0.13 (0.08, 0.19) | 10 | 1770787.6 | 0.06 (0.30, 0.10) | 31 | 3450540.1 | 0.09 (0.06, 0.13) |
| 11-15 | 385 | 1534630.0 | 2.51 (2.27, 2.77) | 50 | 1619803.8 | 0.31 (0.23, 0.41) | 435 | 3154433.8 | 1.38 (1.25, 1.51) |
| 16-20 | 579 | 872855.6 | 6.63 (6.11, 7.20) | 54 | 921778.1 | 0.58 (0.45, 0.76) | 633 | 1794633.7 | 3.53 (3.26, 3.81) |
| 21-24 | 139 | 206908.7 | 6.72 (5.69, 7.93) | <4 | 218898.8 | 0.14 (0.04, 0.42) | 142 | 425807.4 | 3.33 (2.82,3.93) |